????? ?? ??? ????? ??????

????? ?? ?????? ????? ????? ?????? ????? ????????????? ???? ???? ??? ?? ????-???????????? ????????????? ?????? ????. ?????? ????? ????????????? ???? ???? ??? ????-???????????? ????????????? ?????????, ?? ????? ??????? ??? ???????????? ?????? ?????? ????. ????? (SiO2) ???????????????????? ???? ????? ?????? ??? ?????????? ?????? ??????????? ????????, ???? ?? ?? ?? ℃ ?????????? ???? ?????????? ???????? ??? ?????. ??????? ???????? ??????? ??? ??? ????????? ????????????? ?????? ?????? ???????????? ????? ???, ???????? ???????? ??????? ??? ????????? ???????? ?????? ????. ????????? ??????, ?? ??????? ??? ???????????? ??????????? ??% ?????? ????? ???, ???????? ?????? ??????????? ??? ??????????? ????????? ????. ??????????? ?????? ????????, ?? ????? ?? ℃ ?? ????? ???????? ???????????????? ?? ?????????????? ???? ?????? ?????, ?? ??????? ?????????? ??????????? ??? ??????????? ??????????? ????. ?????? ???????????????? ????? ????????????? ??????? ????????? ?????, ??? ??? SiO2 ??????? ????? ??????????, PF/PVC-SiO2 ??????? ??? ABS ??????? ????? ??? ????? ?????? ???, ?? ?????????? ????????? ????? ??????? ??? ???????? ???????????? ?????? ?????. ???? ???????? ???????? ??? ??????? ?????? ?????????? ???, ???? ????? ?? ?????? ????? ????? ?????? ??????????????? ???????? ?????? ??? ???, ?? ??????????? ????????? ??????? ??????????? ??? ??????? ????.